iOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPhone 8 (GSM), released on 2018-10-30T17:15:58Z. The update package is 488.77 MB. This is a delta (partial) update that requires 12.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: bbdae456a84602af9bc8bb2be64da9e2d555e178.zip.